WordNet sense 1 (a source of oil; used for forage and soil improvement and as food):

soybean, soya bean

WordNet sense 2 (erect bushy hairy annual herb having trifoliate leaves and purple to pink flowers; extensively cultivated for food and forage and soil improvement but especially for its nutritious oil-rich seeds; native to Asia):

soja, soya, Glycine max, soja bean, soybean plant

WordNet sense 3 (thin sauce made of fermented soy beans):

soy sauce